Damper-regulator.



PATENTBD JULY 10, 1906.

C. P. GERITZ.

DAMPER REGULATOR.

APPLICATION FILED AUG.12,1905.

Aitorneys OLAUS PETER GERITZ,

OF KIN GSLAND, N EW JERSEY.

DAMPER-REGULATQR.

I Specification of Letters Patent. Application filed August 12, 1905. Serial No. 273,966.

To all whom it may concern:

Be it known that I, CLAUS PETER Gnnrrz, a citizen of the United States, residing at Kingsla'nd, in the county of Bergen and State of New Jersey, have invented a new and useful Damper-Regulator, of which the following is a specification.

This invention relates to automatic damperregulators, and is rimarily designed for usein connection with ot-water heatin sys tems for controlling the damper and draftdoor of the furnace by the rise and fall in temperature of the water in the circulating system.

It isproposed to arrange the present device so asto be conveniently applied to the circulating system, preferably to the return pipe thereof, without requiring any alteration therein beyond the disconnection of one of the lengths of pipe and the substitution therefor of the present device.

Other objects of the invention reside in the provision of means for maintaining the de- .vice supplied with the necessary amount of water from the circulating system, to effect the automatic escape or blowing ofl of an excessive collection of steam, and to provide for the convenient adjustment of thedevice for rendering the latter more or less sensitive, so as to accommodate the device to existing circumstances.

With these and other objects in view the present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that changes in the form, proportion, size, and minor details may be made within the scope of the claims without departing from the spirit or sacrificing any of the advanta es of the invention.

In t e accompanying drawings, Figure 1 is a longitudinal sectional view of a damperregulating apparatus embodying the features of the present invention. view thereof.

Like characters of reference designate corre ponding parts in both figures of the drawin s. I

The present apparatus includes a tank or chamber 1, whichis piercedat its o posite Fig. 2 is atopplan ends with the alined openings 2 and 3, t ough:

which extends a length of pipe l, with its ends ro'ected beyond the chamber and three ed ior connection with adjacent lengths Y collar being provided wi Patented July-1 0, 1 901 of the. returnwater-pine of a water-heating system. One end of the pi 'e, preferably the lower end, is provided with a con ling 5 in the nature of an internally-three ed collar of the water-heating system, said coupling or th a laterally-directed outlet-n pple 6 for a purpose as will be hereinafter described.

In substantial parallelism with t is chamvtion with the chamber 1, preferably by having its lower 0 an and threaded or otherwise connected t6 t e top of'a hollow extension 8 of the .lower end portion of the chamber, whereby the chamber and the cylinder are in constant communication. der there is a piston 9, provided at its lower end with asuitable packing l0, heldin place by a sprew 11, the upper end of the piston being provided with a longitudinal socket or re- .cess 12, opening through the top of the pie ton. At the top of the piston there is an external annular flange 13, designed to engage with the top of the cylinder and limit the downward movement oi the piston The cylinder is provided with a vent-port 14, which is normally closed by the piston and is open only when the piston is elevated above the port by excessive steam-pressure within the chamber 1 and the cylinder.

WVater is supplied to the chamber 1 means of an elbow pipe or passage 15,'which leads from the nipple 6 to the bottom of the extension 8 and is equipped with a controlling-valve 16, which 18 normally closed, said valve being opened merely to furnish the necessary water to the chamber 1 from the return water-pipe of the circulating system. The top of the chamber 1 is provided with a vent-passa e 17, having a removable closure 18, preferah ing employe steam when her 1. i

Rising from one side of the chamber 1 and projectin abovethe top thereof is a yoke or fork 19, t e o posite ends of which are provided with tuhular bearings 20 for the su port of a shaft 21, which is held against an wise la by means of collars 22, secured to the slim, t, by set-screws and engagin the ends of the respective bearin 20. pon one end 'nrtion of this shaft there is a crankarm 2 3,;ying across the top eff-the cylindefl,

to permit the escape of air and supplying Water to the chamand from which depends a cbnnectinmrod 24.

for connecting the pipe 4 to the return-pipe .ber 1 [is a cylinder7, which is in communica- I Within the cylinl a threaded plug, this vent be- With its'lower end received Within the so or seat 12 in the top of the piston 9. The bottom of the socket 12 is dished. or down- Wardly tapered, as at 25, and the lower end 5 of the rod 24 is pointed for engagement wit the lowermost portion of the bottom of the socket to form a loose step-bearing thereon. The upper end of the rod 2% is provided with a fork 26 to straddle the arm 23, and'the lat- IO ter is provided with a lon itudinal series of perforations for the individual reception of a pin or key 27, which also pierces the fork for the urpose of connecting-the latter to the cran arm at different points throughout its I 5 length. Upon the other end portion of the shaft-21 there are oppositely-disposed arms 28 and 29, preferably carried by a suitable collar 30, fixed upon the shaft by means of a set-screw 31.

2o 32 and33, preferably chains, are attached to the outer ends of the cranlcarms 28 and 29,

one of them extending to the damper of the furnace and the other to the draft-door thereof.

When the apparatus is in use, the valve 16 isopened to admit a suitable amount of Wa ter from the return Water-pipe of the circulating system to the tank 1, after which the valve is closed, so as to prevent the admission of Water into the tank. As the pipe 4 constitutes one of the sections of the return Water-pipe, there is of course a constant circulation of Water through the pipe 4, whereby the water Within the tank 1 is maintained at substantially the temperature of the Water in the pipe 4,v and any change in the temperatureof the Water in the pipe 4 :Will of course produce a similar change in the Watenof the tank 1. Should the Water of the circulating system become heated beyond a redetermined degree,'the temperature of t ingly increased, and by the consequent eigpension of the Water and generation of steam 5 within .the tank 1' the piston 9 will be elevated, and throu h the medium of the pus .rod 24' the rock-s aft 21 will be turned so as l to pull upon the connections 32 and 33 to closethe damper and rzlpen the check-draft 5c ydoor, thereby to slow own the fire of the -furnace'. On the other hand, should the tem- I'oe-rature of the water of the heatihg system fall belowv a predetermined degree by reason of the fire in the furnace becoming low the water in the tank 1 .will of course cool off, and

by reason of its, contraction and the reduction of the 1pressure the lpiston will descend and the roc shaft 2 1 Wild. he rocked by reao0 son of the Weight of the arms 23 and ,which extend from the same side of the s1" thereby o ening the damper and Closing the c'heck-dra door, so as to accelerate the rate of combustion; s f

Should steam be generated'to a dan erous extent Within the chamber 1 and the cy inder l a l further cket 7, the piston Q Suitable flexible connections tro no water in the tank 1 will be accordo thereof, the bottom 0 actuating means mount will be elevated beyond the whereupon the steam can escape port 14:,

osion is thereby escape, and danger of expl avoided.

From the foregoing description it Will be understood that the apparatus of the present invention is entirely complete inzitself and may be placed upon the market in the form illustrated in the accompanying drawings, Wherefore the apparatus may be fitted in place Without making any change or alteration in hotater heating systems as now commonly installed, the pipe 4 takes the place of one of the pipe-sectiohs of the return Water-pipe oft-he heating system. 7

It is important that the-present regulator be included in the return-pipe rather than in the feedipe, for the reason that the conlling o the furnace would be premature if regulator was acted. upon by the hot Water it leaves the furnace, and therefore the most satisfactory results would not be ob tained. By including the regulator inothe' return-pipe the regulator is acted upon by that portion of the vWater Which has passed entirely through the circulating system, Which gives the most satisfactory results.

Hating thus described the invention, What is claimed is- 1. in a damper-regulator, the combination of a chamber, a circulating-pipe extending through the chamber from top to bottom f the chamber having a lateral extension in communication with its interior, an upright open topped cylinder carried by the extension and in communication therewith, there being a valve-con trolled passage lea pipe to the extensio plying the latter With Water, a trol d element carried by sible at open top thereof, a bracket d by the top of the chamber, dam cr-' ed upon the brac at,- and a connecting-rodhung from the damper actuating means and in cooperative relation with the fluid-controlled element.

A da1nper-regulator o letting-pipe, a chamber embracin the pipe n oi-the chamber for sup fluid-cons valve-controlled supply-passa the circulating-pipe to the extension of the chamber, a cylinder in communication with and rising from the extension of the chamber with the upper end of the cylinder open, a piston working in the cylinder and projecting through the open top thereof, the upper end of the piston being provided with an external stop-shoulder for engagement With the top ofthe cylinder to limit downward movement of rovided with a lateral extension, ag. ge leadingfrom' 4 too ding from the circulatingthe cylinder and IIO ornprising a circuthe piston, and damper-actuating means associated with the piston.

23. In a damper-regulator, the combination of a chamber pierced at opposite ends for the reception ofa circulating-pipe, a cylinder in and received Withil. the secket of the piston Sfiifl oinmunication with the chamber and haiv- I independent of the latter and in the ing its 11 per end span, a pisten Working theupward movement of the piston. tiuaugh t 16 open top of the cylinder and To i In testimony that I claim the foregoing as vided in its u er end with a socket an my own I have hereto affixed my signature external SEMI-153561 to engage the top of the in the presence of two Witnesses. cylinder to limit the downward movement of CLAUS PETER GERITZ.

path of 0 Witnesses:

C. E. GeRLAND,

JACOB LEMPERT.

the piston, dempermctuatizig means,.a,11d a connecting-rod hung thereiroin nth its lower 

